A Possible Major Problem

blackhavok · January 6th, 2008, 01:49 PM

well everytime i go beyond 80 mph my car begins to vibrate rather loudly. what do u guys think it could be? please guys help me out!

04GTAMPA · January 6th, 2008, 01:53 PM

Vibrate loudly? like vibrates and makes noises or vibrates very strong? Balding tire or simply bad balancing? Does it pulses when you brake?

mustangmanic · January 6th, 2008, 01:54 PM

was it in an accident prior to u buying?

07 procharger · January 6th, 2008, 02:01 PM

u joint could be out of it as well...just cant feel it at lower speeds?

zers · January 6th, 2008, 02:05 PM

Check the alignment as well. My thunderbird used to shake at high speed, then i discovered the alignment was way out of whack.

TASSY5 · January 6th, 2008, 02:59 PM

OK, the first thing you should do for this post is let us here know what Mods you have done to the car (meaning rims/tires/driveshaft/Etc.....)? That could help some of us help you.

blackhavok · January 6th, 2008, 06:28 PM

yea only at high speeds. n its not the sway bar as it would do it before too. mod list is:

Bassani Long Tube Headers
Bassani Catted X-Pipe
Bassani Race Mufflers w/ 4 inch tips
AFE Cold Air Intake
Sanoli Tuned SCT Xcalibrator II
Konig Light Alloy Aluminum Wheels
3.73 gears
1-Piece Aluminum Driveshaft
3000 Stall Torque Converter
Stage 3 Comp Cams w/ Springs and Retainer
Eaton Posi Differential
Shelby GT500 65mm Throttle Body
Steeda Charge Motion Delete Plates
MSD Coil Packs
Autolite HTO Spark Plugs
Steeda Ultra-Lite Lowering Springs
BMR Lower Control Arms
BMR Adjustable Panhard Bar
LFP Sway Bar Elimination Kit

MaverickMLFD371 · January 6th, 2008, 06:49 PM

which driveshaft do you have installed on your vehicle? that might be the source of the problem.....

blackhavok · January 6th, 2008, 06:52 PM

ULT-CD60350 05-08

Ultra-Light Aluminum Driveshaft Kit
05-08 Mustang (V8/V6) 1pc Aluminum (550+ hp)
Shipped complete with adapter plate, bolts and instructions.

blackhavok · January 6th, 2008, 06:53 PM

its from rpm outlet

gloryboy · January 6th, 2008, 07:17 PM

1 piece driveshafts are notorius for causing nvh on the 05+ stangs especially those with an auto tranny. That's why the car comes with a two piece shaft from the factory. Being that the car is lowered, your pinion angle is probably off. Adjust the pinion angle back to spec and see if that helps (i think it's supposed to be -1 to -2 degrees)

05mustang_kb_charged · January 6th, 2008, 07:36 PM

+1
start with ckecking ds angle, there has only been 1 driveshaft that has been proven not to vibrate and that is the spydershaft. But there are not a 100% guaranteed either. If I remember he has only had 1 customer that had a vibration with his ds. If not that check your tires for a separated belt or just out of balance

Originally Posted by gloryboy

1 piece driveshafts are notorius for causing nvh on the 05+ stangs especially those with an auto tranny. That's why the car comes with a two piece shaft from the factory. Being that the car is lowered, your pinion angle is probably off. Adjust the pinion angle back to spec and see if that helps (i think it's supposed to be -1 to -2 degrees)

blackhavok · January 6th, 2008, 07:43 PM

where can i get that done?

07 Grabber GT · January 6th, 2008, 09:35 PM

Or narrow it down, replace the shaft with the stock one (assuming you still have it) and go from there ... tire balancing next ... I'd even bypass the shaft if you feel it in the steering wheel. Could be the Posi not working right either ... but you have to narrow down by eliminating the the first two.

ROUSH STAGE II · January 6th, 2008, 11:17 PM

Do you notice it more in the steering wheel, pedals, etc.

blackhavok · January 7th, 2008, 08:30 AM

more in the seats actually.

07stanggt · January 7th, 2008, 09:21 AM

none of those mods are new though right? I would start by looking at the tires or the alinegment. lot cheaper to take it somewhere and have the tires checked.

1FastFox · January 7th, 2008, 09:43 AM

Sounds like a wheel balance issue to me, Been hitting any curbs/potholes recently? Would you be able to feel a DS balance issue at low speeds as well rather than @ 80? Not sure on that one as Im still rolling the two-piece over...

gloryboy · January 7th, 2008, 12:06 PM

Originally Posted by blackhavok

where can i get that done?

I think most shops that do wheel alignments can check this for you. They can check your front wheel alignment while your there. You will need either an adjustable uca or adjustable lca's to adjust the pinion angle though....

06GTMustang89 · January 7th, 2008, 12:22 PM

Originally Posted by 1FastFox

Sounds like a wheel balance issue to me, Been hitting any curbs/potholes recently? Would you be able to feel a DS balance issue at low speeds as well rather than @ 80? Not sure on that one as Im still rolling the two-piece over...

well with the driveshaft it doesn't matter about mph because it spins as fast as the engine does so he would feel that constantly because we shift gears. Wheel balance probably bro you probably knocked a weight off or it fell of somehow. Plus on on rolling that two piece over i can't wait to get a sydershaft!!

And like said above adjust your pinion angle back to stock spec....a adjustable upper link should be your next purchase

January 6th, 2008, 01:49 PM	#1
blackhavok Enthusiast 2006 Mustang GT 11.27@119.7 Join Date: Oct 2007 Location: McAllen, Texas Posts: 504	A Possible Major Problem well everytime i go beyond 80 mph my car begins to vibrate rather loudly. what do u guys think it could be? please guys help me out! __________________ www.RADMustangs.com Bassani Crew Member #2 430 RWHP 415 Torque Saleen S/C at 9.5 psi, stock engine and auto transmission, Full Bassani exhaust 11.34 @ 121.8 1/4 7.1 @ 93 1/8 1.54 60' Check it out at myspacecom/havokdacarking

January 6th, 2008, 01:53 PM	#2
04GTAMPA Hardcore Enthusiast 1999 Mustang GT Join Date: Apr 2007 Location: Riverview, FL Posts: 2,260	Vibrate loudly? like vibrates and makes noises or vibrates very strong? Balding tire or simply bad balancing? Does it pulses when you brake? __________________

January 6th, 2008, 01:54 PM	#3
mustangmanic Hardcore Enthusiast 2002 Mustang GT 13.334 @ 106.57 Join Date: May 2007 Location: Indianapolis Posts: 2,495	was it in an accident prior to u buying? __________________ Accufab 75mm TB and Pleunm, JLT cai, Steeda Caster Chamber Plates, Eibach Sportline Springs, Tokico Shocks/Struts, FRPP Aluminum Driveshaft, FRPP 3.73's, Hooker LT's, Hooker O/R X, Pypes Violator Catback, SCT Xcal 2. 280rwhp

January 6th, 2008, 02:05 PM	#5
zers Regular 1965 Coupe Join Date: Oct 2007 Location: Oregon Posts: 290	Check the alignment as well. My thunderbird used to shake at high speed, then i discovered the alignment was way out of whack. __________________

January 6th, 2008, 02:59 PM	#6
TASSY5 Regular 2007 Alloy GT Join Date: Dec 2006 Location: Kenner, Louisiana Posts: 141	OK, the first thing you should do for this post is let us here know what Mods you have done to the car (meaning rims/tires/driveshaft/Etc.....)? That could help some of us help you. __________________ 2007 Alloy GT. 5 speed, Spydershaft, MGW shifter, 3.55 gears, Sequential tail lights, C 300 Cervini's Full Body Kit, CDC Hood Struts, Whipple HO.SC. 468 SAE RWHP 450.44 RWTQ

January 6th, 2008, 06:28 PM	#7
blackhavok Enthusiast 2006 Mustang GT 11.27@119.7 Join Date: Oct 2007 Location: McAllen, Texas Posts: 504	yea only at high speeds. n its not the sway bar as it would do it before too. mod list is: Bassani Long Tube Headers Bassani Catted X-Pipe Bassani Race Mufflers w/ 4 inch tips AFE Cold Air Intake Sanoli Tuned SCT Xcalibrator II Konig Light Alloy Aluminum Wheels 3.73 gears 1-Piece Aluminum Driveshaft 3000 Stall Torque Converter Stage 3 Comp Cams w/ Springs and Retainer Eaton Posi Differential Shelby GT500 65mm Throttle Body Steeda Charge Motion Delete Plates MSD Coil Packs Autolite HTO Spark Plugs Steeda Ultra-Lite Lowering Springs BMR Lower Control Arms BMR Adjustable Panhard Bar LFP Sway Bar Elimination Kit __________________ www.RADMustangs.com Bassani Crew Member #2 430 RWHP 415 Torque Saleen S/C at 9.5 psi, stock engine and auto transmission, Full Bassani exhaust 11.34 @ 121.8 1/4 7.1 @ 93 1/8 1.54 60' Check it out at myspacecom/havokdacarking

January 6th, 2008, 06:49 PM	#8
MaverickMLFD371 Hardcore Enthusiast 2005 12.3 @ 115 Join Date: Dec 2005 Location: Southampton, NJ Posts: 1,281	which driveshaft do you have installed on your vehicle? that might be the source of the problem.....

January 6th, 2008, 06:52 PM	#9
blackhavok Enthusiast 2006 Mustang GT 11.27@119.7 Join Date: Oct 2007 Location: McAllen, Texas Posts: 504	ULT-CD60350 05-08 Ultra-Light Aluminum Driveshaft Kit 05-08 Mustang (V8/V6) 1pc Aluminum (550+ hp) Shipped complete with adapter plate, bolts and instructions. __________________ www.RADMustangs.com Bassani Crew Member #2 430 RWHP 415 Torque Saleen S/C at 9.5 psi, stock engine and auto transmission, Full Bassani exhaust 11.34 @ 121.8 1/4 7.1 @ 93 1/8 1.54 60' Check it out at myspacecom/havokdacarking

January 6th, 2008, 06:53 PM	#10
blackhavok Enthusiast 2006 Mustang GT 11.27@119.7 Join Date: Oct 2007 Location: McAllen, Texas Posts: 504	its from rpm outlet __________________ www.RADMustangs.com Bassani Crew Member #2 430 RWHP 415 Torque Saleen S/C at 9.5 psi, stock engine and auto transmission, Full Bassani exhaust 11.34 @ 121.8 1/4 7.1 @ 93 1/8 1.54 60' Check it out at myspacecom/havokdacarking

January 6th, 2008, 07:17 PM	#11
gloryboy Newbie 2005 Mustang GT Join Date: Dec 2007 Location: S. Florida Posts: 36	1 piece driveshafts are notorius for causing nvh on the 05+ stangs especially those with an auto tranny. That's why the car comes with a two piece shaft from the factory. Being that the car is lowered, your pinion angle is probably off. Adjust the pinion angle back to spec and see if that helps (i think it's supposed to be -1 to -2 degrees) __________________ Series VI, 3.2 pulley, C&L Racer 95mm cai, 39lb injectors, HTO's, BAP, PCV delete, Saleen susp., JBA LT's and H-pipe, high flow cats, Magnaflows, CHE lca's and antisquats, Saleen shifter, 18" Fanblades, 255/45zr/18 g-force kdw's

January 6th, 2008, 07:43 PM	#13
blackhavok Enthusiast 2006 Mustang GT 11.27@119.7 Join Date: Oct 2007 Location: McAllen, Texas Posts: 504	where can i get that done? __________________ www.RADMustangs.com Bassani Crew Member #2 430 RWHP 415 Torque Saleen S/C at 9.5 psi, stock engine and auto transmission, Full Bassani exhaust 11.34 @ 121.8 1/4 7.1 @ 93 1/8 1.54 60' Check it out at myspacecom/havokdacarking

January 6th, 2008, 09:35 PM	#14
07 Grabber GT Regular Join Date: Oct 2006 Posts: 223	Or narrow it down, replace the shaft with the stock one (assuming you still have it) and go from there ... tire balancing next ... I'd even bypass the shaft if you feel it in the steering wheel. Could be the Posi not working right either ... but you have to narrow down by eliminating the the first two.

January 6th, 2008, 11:17 PM	#15
ROUSH STAGE II Enthusiast 2005 Turbonetics Baby!!! Join Date: Jul 2007 Location: Mauriceville, Texas Posts: 603	Do you notice it more in the steering wheel, pedals, etc.

January 7th, 2008, 08:30 AM	#16
blackhavok Enthusiast 2006 Mustang GT 11.27@119.7 Join Date: Oct 2007 Location: McAllen, Texas Posts: 504	more in the seats actually. __________________ www.RADMustangs.com Bassani Crew Member #2 430 RWHP 415 Torque Saleen S/C at 9.5 psi, stock engine and auto transmission, Full Bassani exhaust 11.34 @ 121.8 1/4 7.1 @ 93 1/8 1.54 60' Check it out at myspacecom/havokdacarking

January 7th, 2008, 09:21 AM	#17
07stanggt Authorized Vendor Join Date: Mar 2007 Location: Ellicott City, MD Posts: 4,821	none of those mods are new though right? I would start by looking at the tires or the alinegment. lot cheaper to take it somewhere and have the tires checked. __________________ new vid http://s275.photobucket.com/albums/j...ent=NEWEST.flv www.radmustangs.com

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January 7th, 2008, 09:43 AM	#18
1FastFox Hardcore Enthusiast Join Date: Mar 2007 Location: Indiana Posts: 1,901	Sounds like a wheel balance issue to me, Been hitting any curbs/potholes recently? Would you be able to feel a DS balance issue at low speeds as well rather than @ 80? Not sure on that one as Im still rolling the two-piece over... __________________ Aston DB9, 91 GT Hatch, 06 EB Explorer Aston Crew Member #1 ( of 1 ) http://zombo.com/